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Defense responses of the green microalgae Chlorella vulgaris to the vanadium pentoxide nanoparticles Cover

Defense responses of the green microalgae Chlorella vulgaris to the vanadium pentoxide nanoparticles

Open Access
|Dec 2023

Abstract

Although vanadium-based nanomaterials have found extensive use in industry, their influence on ecosystems and living organisms is not yet well investigated. In this study, hydrothermal methods were utilized for the synthesis of vanadium pentoxide nanoparticles (V2O5 NPs). The gained NPs were characterized using XRD, FT-IR, EDS, DLS, SEM and TEM techniques. Subsequently, the toxic effects of V2O5 NPs on the model green microalgae Chlorella vulgaris were evaluated. According to the obtained results, V2O5 NPs caused a significant reduction in cell number and biomass production of algae in a dose and time dependent manner. Moreover, flow cytometric analysis confirmed a reduction in the quantity of living cells. Scanning electron microscopy showed plasmolysis and deformation of the cells after exposure to nanoparticles. The photosynthetic pigments and phenolics content exhibited a decrease in comparison with the control sample. Although, non-enzymatic antioxidant system in C. vulgaris displayed an average action, antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) showed a dose dependent increasing trend. These intercellular reactions designated the activation of the antioxidant defense system in response to the induced oxidative stress by V2O5 NPs.

DOI: https://doi.org/10.26881/oahs-2023.4.06 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X
Language: English
Page range: 446 - 460
Submitted on: Apr 12, 2023
Accepted on: Jun 13, 2023
Published on: Dec 31, 2023
Published by: University of Gdańsk
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2023 Hanifeh Akbarian Kalehjahi, Morteza Kosari-Nasab, Mojtaba Amini, Ali Movafeghi, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.